DISSOLVED AIR FLOTATION THICKENER

DISSOLVED AIR FLOTATION THICKENERDISSOLVED AIR FLOTATION THICKENERIn a dissolved air flotation (DAF) thickener, solids and liquid are separated via the introduction of fine gas bubbles (typically air) to the liquid phase. The bubbles attach to solids particles, making them buoyant. They then rise to the liquid surface, where a skimmer collects them. This process typically is used to thicken WAS, aerobically digested solids, and contact-stabilized, modified activated, or extended-aeration solids without primary settling. It typically is not used for primary or trickling filter solids because gravity settling is more economical. However, it can effectively cothicken (settle and cons…Next Section >< Previous Section